Change speed gearing



AUS 29, 1933- E.. E. LATHROP CHANGE SPEED GEARING Filed April 23, 1932 2 Sheets-Shea?l l w w V `/qilomeys Aug. 29, 1933. E. E, LATHRO'P CHANGE SPEED GEARING I Filed April 25, 1932 2 Sheets-SheetA 2 its El:

4 474J47J d d@ Z557@ NI E Inventor 4Patented Aug; 29,

Thepresent invention relates to new and useful improvements in gearings, and more.A particularly it pertainsto gearing of the change speedtype.

One object of the presentinvention is tQimprove the construction. andl mode of operation -of L change speed gearing and so `to Vconstruct such lgearingthat lthe various speedsat which the-gear-v ing may be operated maybe obtained vwithease `and facility; and withoutfundue `clashing or the gears.

l A feature the ujlvention; resicletsii'i` `Vatnotrell,Y construction whereby a driving shaft and a drivenl shaftmay be operativelyjconnected together in order tddrivethedriven shaft Vin reverse direc- `tion sa`nd insa forward direction atvarious speeds. f

" Another feature of theylnvention resides in a novel construction whereby the gears instead of i transmission-V gearing' forimotor vehicles, and for:` o ther'types of transmission.gearingwhereinfspace isfactor. ,f t l Otherfeatures ofthe invention relateV to certain and combination of parts hereinafter; described and particularly pointed out in the elaims,` the". advantages ofy lwhich will. be readily understood and appreciated bythose'skillw'm-theart.: n The inventionwill be clearlvunderstood-froxn the" accompanyingV drawingsv illustrating the 4invention in its preferred form jand the .ic'illowing'de-fA tailed descriptionof the construction therein shown. Inthedrawings, i i..

Figure 1 is Aalongitudinal sectional view illustrating a transmission lgearing for`motcr vehicles constructed in accordance with the present inf ventiongthe several partsbeing shown in their) neutrali position.

VFigure2 isa transversefsectional view en a reduced scale taken onl the line 2'-2 of Figure 1, y

Figure 3 is a' detail transverse sectional view taken on a reduced scale taken on `the line 3-3 of Figure1;

Figure 4 is a fragmentary view in elevationk illustrating the operating mechanism ofthe gear ing, 11j

Figures;v "l, 9; and -1l, aretransverse `sectional views on a. reduced scaleillustreting thsposition reresidesin'a new and novel `friction bearing- 25. novei and. improved constmtiqnsf arrangements of the several 4gears in the Vvariousspeed positions,"

Figures.'and-12,are longitudinal'sectional views illustrating the gears in theirdiierent positions@ L In the present invention6i! `I`haveillustratedf the sameas .applied ltov thextransmission gearing Aof 'a` motor vehicle in whichfl various speedsma'y be obtainedA and -in,which{a l reverse direction vof. drive, maybe "had. 1Inthisf v I embodiment of this invention,"thereference nue/i653 v:neral 15 designat`es the floorof'lavehicle'. Ther reference numeral 16 'designatesthe `clutch heus-n; 1 ing, the clutch not being'slicwn, thustheseparts maybe of any desired .standard `onpreferred' corrstruction.' j M In carrying out .the present'invention,z1iprovide 1 1f UNITEDN srArEsPATl-:NT

' l 11,924,5" n SPEEDiilaliltnvGf n ffmishandwardm'tnrp. Newmark, N. ri 'Abiatihhnl'wie Nagui Y' i sciarpe winssi the rear` wall 1'1 ofthe clutch housing with albjearing 18 and extendingthroughthisibearingftherefis agpower; shaft or driving shaft 19.,

ing 'itsf rear end,` and also mounted in this ,sleeve 20'isithe forwardend of .a driven shaft-21.' y Mountf i ed' upon the. exterior face @ofV `the rear 'twha'lllv r171.51'

vthelclutchV housing thereis av bearing 1 22g-'and mounted lupon bearing-22 .there is la l casingA` by. theinterior of said angef`24 there is `an a'ntif-z` 25 :forms the support forf the jforward endj of a' beanngizs best'iuustrateinrigure 1. vj

.The reference-numeral28 designatesauniversal i "Q A fjointrhousingand secured theretoasat' 2'9in .any '9 l desired manner, thereisva angeiBOcarried'by the extension 3'1.ofthe.rea; r,end ofthe casing or house g ing-:23. extension 31 'carries' an internally "E ment' therewith there a. member .33 which' hasV joint -wmiin'1;1161110using` f2s; subnet, nerei'shown in detail. lfThe member 3 3 hasa flange extension 39, andthis flange extension 39 carries an anti# :riemen bearing 4o" within i whicnjisj received n a, y flanged extl'ension41` `ony the rear wall of the aux; iliary liousiiigfZ.; V

friction' bearings n25 and l mand Ymay be rotated therein. I txwill benoted ithatvthe parts are. so'- or`housing'23.A The bearingf22isV inthe formav `of aire arwardly'v extending flange 24; and carried l miseria-friction beanng- @.11 f

secondaryhousing V26.. whiohhaslan" extension 27 fr n ofits end wallfmounted within .said anti-'friction 11 1 M t u ;,105- -Byihisfmsansjustdeeribeditheauxiliary ses# i or housing26 isrotatablyvmounted inthe antimammina-this auxinary;easmgrsrv housing 26 1119 l rotates about an axis which is leccentric with respect to the longitudinal axesof the driving shaft t 19 and thedriven shaft 21. f

- As best illustrated in Figure 1, the auxiliary casing or housing26 is providedwith a plurality of s internal radially disposed partitions 46,47, 48, 49,*

' Thesev several Vpartitionsfjust mentioned formy bearing supports and a plurality of shafts are v suchlmanne'r as lto impart power-theretowhen v s illustrated'the"position of .the s'everali gears when*V `'ngfare-fof the same. valueand that' when the gear .f 56"-isz brought in-fmeshwith thel gear 58and thev y gear 57-fisbrought internesh1vvithfthe'y gearv 59,5

mounted in the rbearings carried by these partis.:

tions, which constructions will be hereinafte;` de.v scribed. v .Y .Y The reference value.-A Ygear 58Lis mountedupon the driving -V shaft in such a'manner as torotate therewith, and Y I is a'fsin'all ,beveledgear`91 'carried by a shaft 92l y a gear 59 ismountedlon thefdriven: shaft21jin power is imparted to the gear 59.

the shaft 2l Willberotated atthe same speedV as isthe'shaft19.`Y v I .l

The :'jpositionffof the -.gears just: described is f' clearlygillustrated `in.-Figures 5 ,and ."6 of. :the-V drawings, Vand this position of the gears, drivingV the fdriven shaft 21Vlatl 'correspondingv number of revolutions per minute vwith the driving shaft 19 is, that .position'commonly known as .fvthird orhighspeed injautomobile gearing..

jfInrEigures.,-7Zand .f'ofithe drawmgs, I have the driven vshaft `21 is driven from' Ythe `driving shaft 19 at intermediateespeed. To produce this speedY rratio L-between .thefshafts J'19 fand' 21', *ashaft GUI-is mounted intheep'artitions 46,.47',148 and-.49.,v At it'sxfforward end thisshaft 6 0,.carries.a gear 611which` .is Vof. greaterk -value than j the gear ,556-

rheretofore =`describedg` and 'at tits rear.; end 'roar-Y ries a gearf62-iwhich latter ris mounted between A ures'7and-.8-of the drawingsfand it willbe 'notedv to mesh with-a gear 63...'upon the dr-i'venf.shaft721'.'V

This position of .the parts ,.is. illustrated .in Fig-I that Vthe .gearssf'land 62 are-0f y such .sizethat the speed or;number of revolutionsper minuteof (the shaft 21.-'Willr be .,reducedjfwith'.. IrelationI of thoseV of. thev shaft.. 1.9.'de`pendentf11p0n the values ofthe gearsGl, 6 2 and 63.." This position'ofthe. severalparts is illustratedinfFigures 71and8.; A Y .Iny Figures Y 9 Y and 1Q I.; havefshownctheparts in', that position "whichjthey, occupy when the drivenY shaft ,21; istokbe driven in fiirstfbr 510W,

'speed. By reference toltheseffigures it will-be noted that there A,is a shaft ,705 mounted in Vthe partitions 46 ,g 47, 48,' 4gV andv 50.* 4Thisshaft ,70

rear enda gear '72, thelatter gear beingsmaller in diameter'th'anthe V.gearj71, andthe gear 72 meshes with .a relativelylarg'er gear 73,1nounted` vupon the driven slaftv21l i Thus ityvill be apparent that forany 'givenspeed of 'thedriving shaft 19, when the gears 71and 72u arejin engagement gear-83 caried'by the drivenl shaft' 21, while'the-i esv numeral 55 designates .af shaft w mounted in bearings carriedby the partitions 46,` and 47.: On'the forward end of thisshaft 55 there is a gear 56, and on the rear end thereof,v there is "l a gear-57. These' gears 56 and 57 are of the same best illustrated: inv Figure 4,v this* gear 931 meshes ably-mountedluponthemaincasingor housing 23f shafts extending parallel to the power and. drivs driven-shaft 21 is reversed in its direction of ,Y movement `with relation to. the driving shaft 19.

` InFigures l1 and 12 itwill benoted that there at its forwardend and a'gear 82 at its rear end.

gear 8,1 meshes With an 'idler gear 84 mounted on va shaft 85 carried by the front walls of "theauX-j iliary casing or housing 26. Thus as' the idler gear .84 isibrought into mesh with the'gear 58 'carried 'by the driving shaft 19,' the shaft 21 will. be driven'in `a reverse ,direction through lthe jmedium'ofthe shaft .80 and its gears 81 and 82,

'the latter'of which nieshes with'the gears 83.

Meansis'provided to rotate the auxiliary cas-3. l ing or housing 26 and to accomplish this result, ther Vsaine is '.providedruponits end'with a beveled.Av gear 9U.- VMeshingwith thisbeveled gear QOL-there the louter endlof whichl carries a gear!v 93. 'As

'witha relatively large' gear-94' carried upon' a shaftg9'5 and-upon which is mounted la Vgear 96. Meshing Withthe gear'QGfther'e-isr an. arcuate gear 97 carried 'by a hand lever 98which` latter 'ispivf otally mounted as .at 99:1 between `lugslOf) suit# l By thisA construction it willbe obvious that as` the handv lever y98 is rocked aboutitsgpivotal point'.l

to the several dotted line positionsinwhichv it Y is illustrated in-'Figue 1, the auxiliary casing ,ort housing -26 rwill` be rotated tor move r--the several 'f gears vinto mesh -in the' manner Y. heretofore -de` scribed to produce'differentspeedsof rotationas well as differentdirections lof-grotation= of theVV driven shaft 2111bythe power or driving shaft 19.v Suitable'means maybe providedA to lock the iltrated)v Y may :be employed to', lock the auxiliary;

' casing or housingf26 in the differentl positions Vin which the several gears arejmeshed with-onean-l other to produce thef desired speed.

1 While 'the invention has Ibeeni-jherein Ydisclosed ina preferredform,` it is to be understood that the' f invention is not to fibe'limitedgto the specific con#` vstruct-ion .he'rein` illustrated, and'v that it mayfbe practiced in Aotherformsjwithout departing fromV the spiritfthereof.`v Y l vHaving thusbdescrib the invention; what fis claimed'iaslnew, Land l Whatfit.` is desired' to; secure byLetters Patentloffthe UnitedStates, isz-w. 71. A'transmission;gearingcomprising a power shaft,'a drivenshaftiniaicialzfalinement "therewith, a gear'onsa'idY powergrshaft, VV a plurality 'of ,gears on said driven shaft, a Yrotatable'cylindria cal casing enclosing said power shaft`,idrivenshaft andlthe' gears carriedthereby; said casing being mounted eccentricallywith relation'to saidpowf er and driven shaftsa pluralityof shafts{mount'A ed Vwithin saidlcasing',andL carried-thereby,V said Agears being sov rconstructedand 'arrange'dfithat rotation-'ofthe casing-,willb'ring theY gears car.- ried by said plurality of shafts successively-into meshl withr'the'-g'ears of` power.'V and driven shafts,

andmeanstorotate'saidcasirlgYA 1115 handfleverV in anyone of its adjusted positions, e

2. An assembly of the type described comprising a housing,` a casing rotatably mounted in the housing, a power shaft projecting into said. cas` mounted in said casing and extending parallel with the power shaft and the driven shaft, and a plurality of gears carried by said shafts and adapted to connect the gears of the driven shaft With thegear of the driving shaft upon rotation of the casing. A

3. Ina gear assembly, a driving shaft and a driven shaft arranged in axial alignment with one another, a single gear carried by the driving shaft, a plurality of gears carried by the driven shaft, means for operatively connecting the driving gear of the driving shaft singly with the driven gears of the driven shaft,` a stationary housing enclosing said driving shaft, driven shaft and gears and a rotating housing Within the stationary housing, said rotating housing forming the support for the means for connecting the driven gears with the driving gear.

4. In a gearing assembly, a driving shaft and a driven shaft mounted in axial alignment with one another, a gear carried by the driving shaft, a plurality of gears carried by the driven shaft, means for connecting Ythe gear of the driving shaft singly with the gears of the driven shaft,

a stationary housing enclosing said driving shaft, driven shaft and gears, a rotating housing mount ed within the stationary housing,` "saidrot'ating" housing forming a support means for the means connecting the driving gear with-the driven gears and manually operated means for rotating said rotating housing within the stationary housing to connect the driving gear singly with the driven gears.

Y l 5. In a gearing assembly, a driving shaftanda driven shaft mounted in axial alignment with one another, a gear carried by the driving shaft, a plurality of gears carried by the driven shaft, means for connecting the gear of the driving shaft singly with the gears of the driven shaft, a stationary housing enclosing said driving shaft," driven shaft and gears, a rotating housing mount ed within the stationary housing, said rotating housing forming a support means for the means connecting the driving gear with the driven gears and manually operated means for rotating said rotating housing Within the stationary housing to connect the driving gear singly with the driven gears, said last mentioned means comprising 'a gear carried by the lrotating housing, a second 4gear meshing therewith, a manually operated 

